Error decoding contract event deployed with forc 0.63.5, fuel-core 0.35.0

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1

Hi Fuel team!

I got a problem with docoding contract event(with fuels-ts 0.94.6):

[21:18:23.649] ERROR (41038): error decoding event
    chainId: 0
    logType: "Block Range Query"
    workerType: "HyperFuel"
    fromBlock: 0
    toBlock: 10800059
    addresses: [
      "0xafb6691ff311bb66067486481d7400d01faeef2f291fcfdda514e82d7230d027"
    ]
    fetchStateRegister: "root"
    blockNumber: 10782769
    logIndex: 1
    responsible event: {
      "blockHeight": 10782769,
      "blockTimestamp": 1726752468,
      "contractId": "0xafb6691ff311bb66067486481d7400d01faeef2f291fcfdda514e82d7230d027",
      "receipt": {
        "blockHeight": 10782769,
        "data": "0x0000000000989680336b7c06352a4b736ff6f688ba6885788b3df16e136e95310ade51aa32dc6f0500000000000000001ef4ca23f77ddd39400e32199f1e7e4a85dff2067a850ee0944ed6ece25c30fe00000000000000000000000000989680",
        "ra": 0,
        "rb": 12590297951544648000,
        "receiptIndex": 1,
        "receiptType": 6,
        "rootContractId": "0xafb6691ff311bb66067486481d7400d01faeef2f291fcfdda514e82d7230d027",
        "txId": "0x53d5c59000376e46cfac78be0d49b906bcd6b109bacc3310b32716b4aac98bdc",
        "txStatus": 0
      },
      "receiptIndex": 1,
      "receiptType": 6,
      "transactionId": "0x53d5c59000376e46cfac78be0d49b906bcd6b109bacc3310b32716b4aac98bdc"
    }

[21:18:23.651] ERROR (41038): Failed to parse event with Fuel, please double check your ABI.
    chainId: 0
    logType: "Block Range Query"
    workerType: "HyperFuel"
    fromBlock: 0
    toBlock: 10800059
    addresses: [
      "0xafb6691ff311bb66067486481d7400d01faeef2f291fcfdda514e82d7230d027"
    ]
    fetchStateRegister: "root"
    blockNumber: 10782769
    logIndex: 1
    err: {
      "type": "_FuelError",
      "message": "Invalid u64 byte data size.",
      "stack":
          FuelError: Invalid u64 byte data size.
              at BigNumberCoder.decode (/Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:453:13)
              at /Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:955:41
              at Array.reduce (<anonymous>)
              at _c.decode (/Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:952:51)
              at /Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:955:41
              at Array.reduce (<anonymous>)
              at _c.decode (/Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:952:51)
              at /Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:955:41
              at Array.reduce (<anonymous>)
              at _c.decode (/Users/master/spark-envio-indexer/generated/src/bindings/vendored-fuel-abi-coder.js:952:51)
      "VERSIONS": {
        "FORC": "0.63.5",
        "FUEL_CORE": "0.35.0",
        "FUELS": "0.94.6"
      },
      "metadata": {},
      "rawError": null,
      "code": "decode-error",
      "name": "FuelError"
    }

We recently had a similar problem and it was resolved with the release of fuels-ts 0.94.6:

it seems that the problem now is decoding the Account struct.

Could you please fix this and give us feedback? Thanks!!!

p.s. to visualize the changes on the Envio indexer side I created a pr:

2

Hey @PaulZhemanov, will look into it and get back to you

3

Just to confirm, did you redeploy your contracts with sway 0.63.6 and fuel-core 0.36.0? Also, can you share the steps to reproduce the error?

4

@Nazeeh21 Hi!

We modified the contract by adding struct Account inside all contract events.

pub balance: Account

You can see the changes on the contract here

I depoloyed this contract and supported the changes on the indexer side by replacing the new abi and contract id:

These are all the changes we’ve made. Thanks!

p.s. we tried the same using sway 0.63.6 and fuel-core 0.36.0 on the contract side.result is the same(

5

Hey @PaulZhemanov :wave:

I am taking a look into this now.

2 Likes
6

@PaulZhemanov are you certain this event is from the new contract deployment. As I can successfully decode the logged data with the old ABI.

Could you check and get back to me please?

7

This issue is very similar to the issue we had last week with fuels-ts. The fuels-ts 0.94.5 had a bug where the regex in the abi compiler got mixed up if the file name had the keyword “struct” in it. Maybe there is a similar issue since we are now logging a struct. When trying to decode the struct, we get this issue.

8

@p.s of course, you can see the changes to abi on both the contract and indexer side at the links above

1 Like
9

@p.s

telegram-cloud-photo-size-2-5422780679948722513-y
telegram-cloud-photo-size-2-5422780679948722513-y1280×239 59.2 KB

10

What are the expected values from this log event?

11

in sway we use u64, but fuels-ts returns BigInt

1 Like
12

No - what is the expected data from the log data event, that you have posted.

What values do you expect as the decoded output?

pub struct DepositEvent {
    pub amount: u64,
    pub asset: AssetId,
    pub user: Identity,
    pub balance: Account,
}
13

we expect log like this

DepositEvent { amount: 86027600, asset: 0101010101010101010101010101010101010101010101010101010101010101, user: Address(95a7aa6cc32743f8706c40ef49a7423b47da763bb4bbc055b1f07254dc729036), balance: Account { liquid: Balance { base: 0, quote: 0 }, locked: Balance { base: 0, quote: 0 } } }
14

@p.s is there anything else I can do to help?

15

Is this a testnet address? I can’t find reference to it.

0x95a7aa6cc32743f8706c40ef49a7423b47da763bb4bbc055b1f07254dc729036
16

@p.s

I’ve removed the fields on the indexer side that use balance:
before debuggin:

 let event = new DepositEvent({
  id: receipt.receiptId,
  user: getIdentity(log.user),
  amount: BigInt(log.amount.toString()),
  baseAmount: BigInt(log.balance.liquid.base.toString()),
  quoteAmount: BigInt(log.balance.liquid.quote.toString()),
  asset: log.asset.bits,
  txId: receipt.txId,
  timestamp: tai64ToDate(receipt.time).toISOString(),
 })

after:

 let event = new DepositEvent({
  id: receipt.receiptId,
  user: getIdentity(log.user),
  amount: BigInt(log.amount.toString()),
  asset: log.asset.bits,
  txId: receipt.txId,
  timestamp: tai64ToDate(receipt.time).toISOString(),
 })

problem is the same…

I started debugging BigNumberCoder in node models

decode(data, offset) {
  console.log("Raw data:", data);
  console.log("Offset:", offset);
  console.log("Expected encoded length:", this.encodedLength);

  if (offset + this.encodedLength > data.length) {
    console.error(`Error: Offset (${offset}) plus expected length (${this.encodedLength}) exceeds data length (${data.length}).`);
    throw new import_errors4.FuelError(import_errors4.ErrorCode.DECODE_ERROR, `Data out of bounds for ${this.type} decoding.`);
  }

  let bytes = data.slice(offset, offset + this.encodedLength);
  console.log("Bytes after slicing:", bytes);

  if (bytes.length !== this.encodedLength) {
    console.error(`Error: Byte length (${bytes.length}) does not match expected encoded length (${this.encodedLength}).`);
    throw new import_errors4.FuelError(import_errors4.ErrorCode.DECODE_ERROR, `Invalid ${this.type} byte data size.`);
  }

  return [(0, import_math3.bn)(bytes), offset + this.encodedLength];
}

and i got this result

Raw data: Uint8Array(96) [
    0,   0,   0,   0,   0,   0,  39,  16,  56, 228, 202, 152,
   91,  34,  98,  95, 255, 147,  32,  94, 153, 123, 252,  92,
  200,  69,  58, 149,  61, 166,  56, 173,  41, 124, 166,  10,
  159,  38,   0, 188,   0,   0,   0,   0,   0,   0,   0,   0,
   30, 244, 202,  35, 247, 125, 221,  57,  64,  14,  50,  25,
  159,  30, 126,  74, 133, 223, 242,   6, 122, 133,  14, 224,
  148,  78, 214, 236, 226,  92,  48, 254,   0,   0,   0,   0,
    0,   0,  39,  16,   0,   0,   0,   0,   0,   0,   0,   0
]
Offset: 0
Expected encoded length: 8
Bytes after slicing: Uint8Array(8) [
  0, 0,  0,  0,
  0, 0, 39, 16
]
Raw data: Uint8Array(96) [
    0,   0,   0,   0,   0,   0,  39,  16,  56, 228, 202, 152,
   91,  34,  98,  95, 255, 147,  32,  94, 153, 123, 252,  92,
  200,  69,  58, 149,  61, 166,  56, 173,  41, 124, 166,  10,
  159,  38,   0, 188,   0,   0,   0,   0,   0,   0,   0,   0,
   30, 244, 202,  35, 247, 125, 221,  57,  64,  14,  50,  25,
  159,  30, 126,  74, 133, 223, 242,   6, 122, 133,  14, 224,
  148,  78, 214, 236, 226,  92,  48, 254,   0,   0,   0,   0,
    0,   0,  39,  16,   0,   0,   0,   0,   0,   0,   0,   0
]
Offset: 40
Expected encoded length: 8
Bytes after slicing: Uint8Array(8) [
  0, 0, 0, 0,
  0, 0, 0, 0
]
Raw data: Uint8Array(96) [
    0,   0,   0,   0,   0,   0,  39,  16,  56, 228, 202, 152,
   91,  34,  98,  95, 255, 147,  32,  94, 153, 123, 252,  92,
  200,  69,  58, 149,  61, 166,  56, 173,  41, 124, 166,  10,
  159,  38,   0, 188,   0,   0,   0,   0,   0,   0,   0,   0,
   30, 244, 202,  35, 247, 125, 221,  57,  64,  14,  50,  25,
  159,  30, 126,  74, 133, 223, 242,   6, 122, 133,  14, 224,
  148,  78, 214, 236, 226,  92,  48, 254,   0,   0,   0,   0,
    0,   0,  39,  16,   0,   0,   0,   0,   0,   0,   0,   0
]
Offset: 80
Expected encoded length: 8
Bytes after slicing: Uint8Array(8) [
  0, 0,  0,  0,
  0, 0, 39, 16
]
Raw data: Uint8Array(96) [
    0,   0,   0,   0,   0,   0,  39,  16,  56, 228, 202, 152,
   91,  34,  98,  95, 255, 147,  32,  94, 153, 123, 252,  92,
  200,  69,  58, 149,  61, 166,  56, 173,  41, 124, 166,  10,
  159,  38,   0, 188,   0,   0,   0,   0,   0,   0,   0,   0,
   30, 244, 202,  35, 247, 125, 221,  57,  64,  14,  50,  25,
  159,  30, 126,  74, 133, 223, 242,   6, 122, 133,  14, 224,
  148,  78, 214, 236, 226,  92,  48, 254,   0,   0,   0,   0,
    0,   0,  39,  16,   0,   0,   0,   0,   0,   0,   0,   0
]
Offset: 88
Expected encoded length: 8
Bytes after slicing: Uint8Array(8) [
  0, 0, 0, 0,
  0, 0, 0, 0
]
Raw data: Uint8Array(96) [
    0,   0,   0,   0,   0,   0,  39,  16,  56, 228, 202, 152,
   91,  34,  98,  95, 255, 147,  32,  94, 153, 123, 252,  92,
  200,  69,  58, 149,  61, 166,  56, 173,  41, 124, 166,  10,
  159,  38,   0, 188,   0,   0,   0,   0,   0,   0,   0,   0,
   30, 244, 202,  35, 247, 125, 221,  57,  64,  14,  50,  25,
  159,  30, 126,  74, 133, 223, 242,   6, 122, 133,  14, 224,
  148,  78, 214, 236, 226,  92,  48, 254,   0,   0,   0,   0,
    0,   0,  39,  16,   0,   0,   0,   0,   0,   0,   0,   0
]
Offset: 96
Expected encoded length: 8
Error: Offset (96) plus expected length (8) exceeds data length (96).

Can this get us closer to a solution? Please give feedback if I’m not clear or descriptive.

17

The account 0x95a7aa6cc32743f8706c40ef49a7423b47da763bb4bbc055b1f07254dc729036 you have provided does not exist.

I managed to partially decode your event and got the following results for the account and asset:

{
  asset: 0x336b7c06352a4b736ff6f688ba6885788b3df16e136e95310ade51aa32dc6f05,
  user: 0x1ef4ca23f77ddd39400e32199f1e7e4a85dff2067a850ee0944ed6ece25c30fe,
}

Which both reference an account and assets on the testnet.

18

hi! @p.s

DepositEvent { amount: 86027600, asset: 0101010101010101010101010101010101010101010101010101010101010101, user: Address(95a7aa6cc32743f8706c40ef49a7423b47da763bb4bbc055b1f07254dc729036), balance: Account { liquid: Balance { base: 0, quote: 0 }, locked: Balance { base: 0, quote: 0 } } }

this is just an example of a data structure. it’s not the transaction that’s the problem…

19

Could you give me the expected decoded values from this DepositEvent for this transaction (0x53d5c59000376e46cfac78be0d49b906bcd6b109bacc3310b32716b4aac98bdc)?

20 
DepositEvent {
  amount: 10000000,
  asset: 0x336b7c06352a4b736ff6f688ba6885788b3df16e136e95310ade51aa32dc6f05,
  user: 0x1ef4ca23f77ddd39400e32199f1e7e4a85dff2067a850ee0944ed6ece25c30fe
  ),
  balance: Account {
    liquid: Balance {
      base: 0,
      quote: 10000000
    },
    locked: Balance {
      base: 0,
      quote: 0
    }
  }
}